收稿日期: 2015-01-07
修回日期: 2015-08-31
网络出版日期: 2016-01-15
Derivation and application of stripmap VideoSAR parameter relations
Received date: 2015-01-07
Revised date: 2015-08-31
Online published: 2016-01-15
VideoSAR是一种新的成像模式,使观测者在一段观测时间内,得到目标场景的图像序列,并以类似电影的方式再现场景信息.本文分别推导条带模式下,以无重叠和有重叠两种方式提取每帧数据时,帧率、分辨率和雷达工作频率的依赖关系式,为开发VideoSAR系统的参数设计提供参考.通过对静止和匀速运动点目标进行帧率为37.50 fps的VideoSAR模型仿真,验证了本文推导的正确性,以及条带式VideoSAR的可行性.
关键词： 合成孔径雷达(SAR); VideoSAR; 帧率; 条带式
宋晓燊 , 禹卫东 . 条带式VideoSAR参数依赖关系的推导及应用[J]. 中国科学院大学学报, 2016 , 33(1) : 121 -127 . DOI: 10.7523/j.issn.2095-6134.2016.01.018
VideoSAR is a land imaging mode. By using VideoSAR, the radar data can be persistently collected on a target of interest,and then "movie-like" images can be created for an extended period of time. We derive the relation expression between frame rate limited by resolution and radar center frequency, and the VideoSAR images can be formed from both the non-overlapping and overlapping sub-apertures. This work provides a useful theoretic approach for designing the VideoSAR system. The theoretical results are validated through stationary target and moving target simulations at the frame rate of 37.50 fps.
Key words： synthetic aperture radar (SAR); VideoSAR; frame rate; stripmap
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